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Abstrakty
Zirconium silicate sands are produced by different branches of industry for several applications in the ceramic industry. This production can be made by different milling processes: dry milling and wet milling. The wet milling yields a smaller particle size. This is a great yield process which implies more stages: addition and removal of water, sedimentation, and addition of alumina (Al2O3), NaOH and a coagulant, generally a polyelectrolyte, which are used to control the process and the quality of the wastewater. Polyelectrolyte allows formation of flocs for the separation of zirconium silicate solids from the water. This experimental study was made with two main purposes: 1) to reuse the polyelectrolyte in the process of coagulation and 2) to reuse the water in the milling process, therefore reducing the amount of wastewater. As a result, some environmental benefits will be obtained: reuse of the water and better quality of the wastewater; and also economical benefits: saving of polyelectrolyte and water, and greater yield in the production process. Membrane technologies are suitable for the removal of suspended solids and organic compounds, like a polyelectrolyte, from water. Some experimental tests were carried out in a pilot-plant scale in order to assess the viability of different membrane processes in the treatment of the effluent from a zirconium silicate production industry. This work presents the results of membrane performance obtained in these experiments.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
177--186
Opis fizyczny
Bibliogr. 7 poz., tab., rys.
Twórcy
autor
- Chemical and Nuclear Engineering Department, Polytechnic University of Valencia. Camino de Vera, s/n 46022 Valencia (Spain)
autor
- Chemical and Nuclear Engineering Department, Polytechnic University of Valencia. Camino de Vera, s/n 46022 Valencia (Spain)
autor
- Chemical and Nuclear Engineering Department, Polytechnic University of Valencia. Camino de Vera, s/n 46022 Valencia (Spain)
autor
- Chemical and Nuclear Engineering Department, Polytechnic University of Valencia. Camino de Vera, s/n 46022 Valencia (Spain)
autor
- Chemical and Nuclear Engineering Department, Polytechnic University of Valencia. Camino de Vera, s/n 46022 Valencia (Spain)
autor
- Chemical and Nuclear Engineering Department, Polytechnic University of Valencia. Camino de Vera, s/n 46022 Valencia (Spain)
Bibliografia
- [1] COSTA A.L., GALASSI C. et. al., α-Alumina–H2O interface analysis by electroacoustic measurements, Journal of colloid and interface science, 1999, 212, 350–356.
- [2] ÖZACAR M., SENGIL I.A., Evaluation of tannin biopolymer as a coagulant aid for coagulation of colloidal particles, Colloids and Surfaces A: Physicochem. Eng. Aspects, 2003, 229, 85–96.
- [3] SANCHO M., ARNAL J.M., PINEDA A. et.al., Application of Membrane Technology for the Treatment of the Effluent of a Zirconium Silicate Production Process, Desalination (submitted for publication).
- [4] SAKOL D., KONIECZNY K., Application of coagulation and conventional filtration in raw water pretreatment before microfiltration membranes, Desalination, 2004, 162, 61–73.
- [5] BRINKER A., SCHRÖDER H.G., RÖSCH R., A high-resolution technique to size suspended solids in flow-through fish farms, Aquacultural Engineering, 2004, 32, 325–341.
- [6] MIHOUBI D., VAXELAIREB J., ZAGROUBA F., BELLAGI A., Mechanical dewatering of suspension, Desalination, 2003, 158, 259–265.
- [7] ZDENEK V., MILAN V., MILAN M., Analytical study of syntans. I. Syntan as a polyelectrolyte, Kozarstvi, 1985, 35(1), 20–3
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPG5-0011-0040